Glass to metal seal on window

My local RV repair shop, that I trust, removes the window. Then the window glass from the rubber seal around it. Then cleans up all the seals and then reassembles all of it using Sika 291. I know there are more than one type of Sika 291. One may be clear, I do not know. I know the product is used on boat windows. The guy has been honest and the business has been around a long time. The process takes lots of man hours so it is not cheap. But he does not have any unhappy customers if he can help it.

Many RV windows use a rubber seal between the glass and metal. A U shaped piece that fits over the glass then pressed, fit into a channel in the metal frame. You can try to find a new seal or use a silicone sealer. If you use silicone tape the area with painters tape both sides of where you're going to apply the silicon. Spread a bead of silicone then with latex or similar gloves run a finger over the silicon to smooth it. Peel off the tape before the silicone starts to cure. It will leave a nice smooth seal that will be hardly visible. I've used this technique in various places, in the home and on the MH and it works well.

If it was me, I would use "Lexel"
it is clear and comes in a tube like caulking, but cost twice as much.

Clean the area first with alcohol

Follow the directions on the tube, and keep mineral spirits and a rag handy for clean up

But first practice on some old glass, etc. It can be very messy if you put too much on.

jack L

silicone adhesive.

Often the glass is held in place and sealed to the metal with a sort of caulking or adhesive, probably a urethane of some sort. If that's the case, the rubber "seal" on the outside is more for trim and to keep things in position than to actually seal against water. The solution to a leak here would be to remove the glass and reinstall it, something that I would be hesitant to do myself.

A strip of some appropriate tape, such as Gorilla Tape, applied between the glass and the frame on the outside will cut down on the amount of water getting in but will not completely solve the problem.

You could ask at a local glass/windshield sort of place, but it may well be cheaper at an RV repair center, if only because they already have the scaffolding etc. ready to go.